Shimano Cassette Lockring Titanium 3.5 g vs Stock 5.3 g (1.8 g Saved)

Every Shimano cassette — from 105 R7170 to Dura-Ace R9270 — is held in place by a single lockring threaded into the hub body. That lockring weighs 5.3 g in stock steel. TiNE's CNC-machined Grade 5 titanium replacement brings it down to 3.5 g, saving 1.8 g on one of the most overlooked fasteners on the bike.

Why swap a lockring that most riders never think about? The cassette lockring sits between the hub and the smallest cog, locking the entire cassette stack in position. It bears the full torque of your drivetrain under load — every watt you produce passes through this one thread. A steel lockring does the job well, but titanium does it at roughly 40% less weight with comparable yield strength. Grade 5 Ti-6Al-4V handles the clamping load without flex, and the CNC thread profile mates cleanly with Shimano hub internals.

Where the Lockring Lives — Hub Body Thread

The cassette lockring threads into the hub body on the freehub side, sitting directly behind the smallest cassette cog. It is the only fastener that prevents the entire cassette stack from sliding off the freehub under pedaling torque. When you remove a cassette for maintenance, this is the piece you unscrew first — and the piece most riders re-install without thinking about weight.

Stacking Savings Across the Rear Hub

The lockring is one of several TiNE upgrades that target the rear hub area. When combined, the savings compound:

Grade 5 Ti-6Al-4V, CNC machined, 8 anodized colors (gold, blue, rainbow, silver, black, pink, green, multi). The CNC thread profile ensures clean engagement with Shimano freehub internals — no thread galling, no cross-threading risk. One lockring covers every Shimano road and gravel cassette from 105 to Dura-Ace.